[Plsgs] Please Join Us- 4/9/24- Seminar - Dr. Tessa Burch-Smith- “Insights into regulating intercellular communication via plasmodesmata”

Fri Apr 5 09:18:10 MST 2024

Dear all,

Please join us! We have the pleasure of welcoming Dr. Tessa Burch-Smith who is visiting from the Donald Danford Plant Science Center<https://www.danforthcenter.org/our-work/principal-investigators/tessa-burch-smith/> for her seminar presentation as part of our SPLS seminar series:

[https://www.danforthcenter.org/wp-content/uploads/2021/08/Dr.-Tessa-Burch-Smith.jpg]<https://www.danforthcenter.org/our-work/principal-investigators/tessa-burch-smith/>
Dr. Tessa Burch-Smith | Principal Investigator | Danforth Center<https://www.danforthcenter.org/our-work/principal-investigators/tessa-burch-smith/>
Dr. Tessa Burch-Smith is an Associate Member at the Donald Danforth Plant Science Center. Learn more about her plant science research.
www.danforthcenter.org

“Insights into regulating intercellular communication via plasmodesmata”

Tuesday, April 9th, 2024

4-5PM

Marley 230

Refreshments served in Marley lobby at 3:30pm.

Zoom:

https://arizona.zoom.us/j/83044711714

(password: spls23)

Abstract:

Plasmodesmata (PD) link the cytoplasm of two adjacent cells, allowing intercellular trafficking of solutes, signaling molecules, protein, RNA and ribonucleoprotein complexes. The regulation of plasmodesmata-mediated trafficking is essential for plant growth and development. A hypothesis called Organelle-nucleus-plasmodesmata-signaling (ONPS) developed by our group posits that specific changes in organellar (plastids or mitochondria) state lead to signaling to the nucleus (chloroplast-to-nucleus retrograde signaling, CRS) which tunes expression of nucleus-encoded genes associated with plasmodesmal regulation. Investigation of known signaling pathways involved in chloroplast-to-nucleus retrograde signaling suggests that these pathways are also involved in regulating plasmodesmata.  Indeed, we have found that intermediates in the tetrapyrrole biosynthetic pathway may have an important role in ONPS.  In the Arabidopsis thaliana ise2 mutant, there is increased intercellular trafficking and increased numbers of branched PD. Gene expression analyses in A. thaliana embryos and plants with reduced ISE2 expression identified genes associated with glucosinolate biosynthesis and metabolism as highly affected by changes in ISE2 expression. Further investigations have revealed a role for aliphatic glucosinolates in mediating ISE2’s effects on intercellular trafficking.  Together, these studies reveal complexity in the cellular signaling mechanisms that regulate intercellular trafficking and illuminate the important roles of metabolites in signaling.

[cid:98a5a050-0a61-428b-867b-a9de66d9432e]

Thank you and I look forward to seeing you there,

Keenia

Keenia Shinagawa, M. Ed. she/her

Student Support | Graduate Coordinator

THE UNIVERSITY OF ARIZONA

School of Plant Sciences (SPLS)
College of Ag., Life & Environ. Sci (CALES)
Office: Forbes, 317
PO Box 210036 | Tucson, AZ 85721

O: (520) 621-1336
kshinagawa at arizona.edu<mailto:kshinagawa at arizona.edu>
www.arizona.edu<https://www.arizona.edu/>

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Student Resources:

CALS Life Management Counselors<https://cals.arizona.edu/life-management-services> | CALS Learning Lab<https://cals.arizona.edu/learning-lab> | Grad Path User Guides<https://grad.arizona.edu/gsas/gradpath/gradpath-user-guides>

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